diff --git a/packages/app-store/_utils/getCalendar.ts b/packages/app-store/_utils/getCalendar.ts
index 5fddb8b419..b2ed77fdce 100644
--- a/packages/app-store/_utils/getCalendar.ts
+++ b/packages/app-store/_utils/getCalendar.ts
@@ -12,7 +12,14 @@ export const getCalendar = async (credential: CredentialPayload | null): Promise
   if (calendarType?.endsWith("_other_calendar")) {
     calendarType = calendarType.split("_other_calendar")[0];
   }
-  const calendarApp = await appStore[calendarType.split("_").join("") as keyof typeof appStore]();
+  const calendarAppImportFn = appStore[calendarType.split("_").join("") as keyof typeof appStore];
+
+  if (!calendarAppImportFn) {
+    log.warn(`calendar of type ${calendarType} is not implemented`);
+    return null;
+  }
+
+  const calendarApp = await calendarAppImportFn();
   if (!(calendarApp && "lib" in calendarApp && "CalendarService" in calendarApp.lib)) {
     log.warn(`calendar of type ${calendarType} is not implemented`);
     return null;
diff --git a/packages/app-store/index.ts b/packages/app-store/index.ts
index 1453334b4c..cf5271ecba 100644
--- a/packages/app-store/index.ts
+++ b/packages/app-store/index.ts
@@ -28,6 +28,7 @@ const appStore = {
   exchangecalendar: () => import("./exchangecalendar"),
   facetime: () => import("./facetime"),
   sylapsvideo: () => import("./sylapsvideo"),
+  "zoho-bigin": () => import("./zoho-bigin"),
 };
 
 export default appStore;